The user in Subject: just created a Security Global group identified in New Group.

In Active Directory Users and Computers "Security Enabled" groups are simply referred to as Security groups. AD has 2 types of groups: Security and Distribution. Distribution (security disabled) groups are for distribution lists in Exchange and cannot be assigned permissions or rights. Security (security enabled) groups can be used for permissions, rights and as distribution lists.

Global means the group can be granted access in any trusting domain but may only have members from its own domain.

Subject:

Account Domain: The domain or - in the case of local accounts - computer name.

Logon ID is a semi-unique (unique between reboots) number that identifies the logon session. Logon ID allows you to correlate backwards to the logon event (4624) as well as with other events logged during the same logon session.